Refining engine



Aug. 4, 1925.

J T GAMBLE REFINING ENGINE Filed Nov. 14, 1924 INVENTOR John 7.' Gamb/e.

ATTORNEY Patented Aug. 4, 1925.

UNITED STATES JOHN T. GAMBLE, OI FBENO HTOWH, NEW JERSEY.

DEFINING ENGINE.

Application filed November 14, 1924. Serial No. 748,983.

4 To all whom it may concern:

Be it known that I, JOHN T. GAMBLE, a citizen of the United States, residing at Frenchtown, in the county of Hunterdon and State of New Jersey, have invented certain new and useful Improvements in Refining Engines, of which the following is a specification.

My invention relates to the art of paper pulp preparation and more particularly to pulp grinding mills of the Jordan type. It primarily has for its objects to provlde an improved liner and plug for Jordan mills, the same being of such construction as to compel the paper stock to turn over many times while passing through the engine and to prevent such stock from passing through such engine without being fully refined. Other objects are to provide a plug and liner by the use ofwhich the stock is cut finer and reduced to a more thorough and finer pulp and better hydrated than with the apparatus now in general use; to provide plug and lining of such construction that they will wear even throughout their surface areas.

Generically the invention comprises a liner having circumferential grooves spaced apart and connected by longitudinal grooves, these between one pair of circumferential grooves being staggered with those between adjacent pairs of circumferential grooves, the circumferential grooves being in planes inclined to the axis of the shell or liner; the plug having preferably diagonal crossing grooves defining diagonal surfaces between them, although these projections may have other shapes if desired such as square, oval, elliptical, etc. or any other design to make cut-' ting surfaces on the plug separated by grooves or channels.

In its more subordinate nature the invention also resides in those novel details of construction, combination and arran ement of parts, all of which will be first fu y described, then be specifically pointed out in the appended claims, reference being had to the accompanying drawing, in which Figure 1 is a vertical longitudinal section of a liner and plug assembled, the plug being shown in elevation.

Figure 2 is a vertical longitudinal section of a liner per se, the parts being shown in elevation.

Figure 3 is an elevation of a modified form of plug.

In the drawing, in which like numerals of reference indicate like parts in all the figures, 1 designates the engine housing in which is located the liner or shell 2, the latter being preferably constructed of brass, steel or other metal with circumferential grooves 3 joined by longitudinal grooves 4 to provide annular rows or sections of projections 5 on the inner surface, such projections being tapered and placed in circular rows between the circular channels. The circumferential grooves or circular channels 3 are located in parallel planes, which planes, however, are inclined with respect -to the axis of the shell, the inclination being preferably the amount equal to the distance between adjacent circumferential grooves. For example if the space between adjacent circumferential grooves measures four inches the inclination of the grooves in a half circle will be four inches.

The projections 5 are staggered, that is to say, a set of projections between two adjacent circumferential grooves 3 are staggered with relation to the corresponding projections adjacent to each end thereof, as

est shown in Figure 2.

The plug 6 is provided with crossing grooves 7 to form projections 8, the outline of which depends upon the direction of the,

grooves 7 and this outline may be either of diamond form, square, oval or other shape.

From the foregoing it will be seen that by inclining the planes of the circumferential grooves to the axis of the shell and plug, I am able to prevent ridges being worn in the plug; furthermore it will be seen that by the arrangement shown and described it will be impossible for the pulp stock to pass to the next series of channels without being forced in a different course, and the fibres of the pulp stock are placed between the outside of the projections on the plug and the tapered surface projections in the shell lining, thereby coming in contact with the it is thought that the construction, operation and advantages of the invention will be clear to those skilled in the art.

\Vhat I claim is:

1. In Jordan engines, a liner having a set of circumferential grooves connected by longitudinal grooves.

2. In Jordan engines, a liner having a set of circumferential grooves connected by longitudinal grooves, the longitudinal grooves between one pair of circumferential grooves being staggered with respect to adjacent longitudinal grooves.

3. In Jordan engines, a liner having a set of circumferential grooves connected by longitudinal grooves, the longitudinal grooves between one pair of circumferential grooves being staggered with respect to ad jacent longitudinal grooves, the circumferential grooves being located in planes inclined to the axis of the liner.

4. In Jordan engines, a liner having a set of circumferential grooves connected by longitudinal grooves, in combination with a plug having projections.

5. In Jordan engines, a liner having a set of circumferential grooves connected .by longitudinal grooves, the longitudinal grooves between one pair of circumferential grooves being staggered with respect to adjacent longitudinal grooves, in combination with a plug having projections.

6. In Jordan engines, aliner having a set of circumferential grooves connected by longitudinal grooves being staggered with respect to adjacent longitudinal grooves, the circumferential grooves being located in planes inclined to the axis of the liner, in combination with a plug having projections, said projections being of lesser area than the area of a surface segment of the liner which is located between adjacent grooves of the linerj 8. In Jordan engines, a liner having a set ofcircumferential grooves connected by longitudinal grooves, the circumferential grooves lying in planes inclined to the axis of the liner.

JOHN T. GAMBLE. 

